Re: About $ 9 $ format or $ 8 $ format of the master-password documentation
The $9 format employ an obfuscation algorithm to map strings (weak encryption). Encoding involves a header of starting noise, followed by string encoding under essentially a Vigenère cipher.
If you want a strong encryption for your configuration secrets, you can configure a master password. The master password is used to derive an encryption key that is used with AES256-GCM to encrypt configuration secrets. This new encryption method uses the $8$ formatted strings.
The $8$-encrypted passwords have the following format: